package com.sang.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource() {
        return new DruidDataSource();
    }

    //后台监控：web.xml, ServletRegistrationBean
    //因为SpringBoot内置了Servlet容器，所以没有web.xml,替代方法：ServletRegistrationBean
    @Bean
    public ServletRegistrationBean statViewServlet() {
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");

        //后台需要有人登录，账号密码配置
        HashMap<String, String> initParameters = new HashMap<>();
        //增加配置
        initParameters.put("loginUsername","admin");//参数名key固定，不要随意修改
        initParameters.put("loginPassword","123456");

        //允许谁可以访问   ""表示所有人都可以访问
        initParameters.put("allow","");

        //禁止谁能访问
        initParameters.put("kuangshen","192.168.11.123");

        bean.setInitParameters(initParameters);//设置初始化参数
        return bean;
    }

    @Bean
    //filter
    public FilterRegistrationBean WebStartFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean<>();
        //设置过滤器
        bean.setFilter(new WebStatFilter());
        //可以过滤哪些请求
        Map<String,String> filters = new HashMap<>();
        //这些东西不进行统计
        filters.put("exclusions","*.js,*.css,/druid/*");
        bean.setInitParameters(filters);

        return bean;
    }

}
